Level 27 or so in FFXV Comrades DLC now, probably getting close to the end of the new-quests questline/full map exposure. After you beat whatever the final boss-encounter is, what's left is just repeating any individual combat missions you like doing and grinding for special monster drops that allow you to max out the best weapons with highest stats possible etc. Some shops you have to buy items via barter instead of gil/cash, too, with the barter for the best base items for upgrading being some of those rare drops. Those special monster drops are a lot of RNG and being lucky at "breaking" specific appendages. Not sure if I'll farm for all of those, it can be seriously aggravating trying to get those specific damage-breaks for a small chance then producing the rare item vs. the common item.
So probably a decent 35-45 hours of time to be had if you do almost "everything" and then stopped - shorter if you just beeline to the end fight. There's a NG+ mode but like in the main FFXV game it's rather lame/useless since it isn't a total do-over, just resets the map-node progression (keep all your gear/items and all your avatars can share/use the same gear so...). Only reason to do it is if you made a certain wrong "pick A B or C" choice, which would mean you'd miss out on special item shops. The combat difficulty overall isn't too tough - again, it's kind of like the main game, where there's a few/several that can be quite tough but most aren't very demanding if you're taking time to upgrade gear.
Anyway, I'm still having fun. If they ever add in more areas/missions etc. I'd be there.